Home / 3,119.10-4,310.48-2,786.93

Finding the Fourth Proportional to 3,119.10, 4,310.48 and 2,786.93

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Solution

The fourth proportional to 3,119.10, 4,310.48 and 2,786.93 is: 3,851.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.10 : 4,310.48 = 2,786.93 : x
  2. Step 2: Convert to fraction form
    3,119.10/4,310.48 = 2,786.93/x
  3. Step 3: Cross multiply
    3,119.10x = 4,310.48 × 2,786.93
  4. Step 4: Simplify right side
    3,119.10x = 12,013,006.03
  5. Step 5: Solve for x
    x = 12,013,006.03/3,119.10
  6. Step 6: Final answer
    x = 3,851.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.